Across
- 2. This describes a fuel that can't be renewed
- 4. This energy source is stored energy
- 9. All energy on Earth starts with this
- 10. This helps block light from the sun and protects Earth
- 11. This uses radiation from the sun that is stored in batteries that generate electricity
- 14. This type of clean energy uses turbines to generate electricity
- 16. This energy source comes from movement
- 19. These currents are created when warm air rises and cold air sinks
- 20. This gas traps heat in our atmosphere
- 21. This refers to how tightly packed molecules are
- 23. This type of energy comes from a source that won't run out
- 24. This energy source uses heat from Earth
- 25. This energy source uses the power of tides
- 26. This fuel source comes from mines and is burned to generate electricity
Down
- 1. This describes an energy transfer that involves touch
- 3. This is often used for heat and cooking
- 5. This is pumped out of the ground and turned into gasoline
- 6. This traps heat in our lower atmosphere, keeping Earth warm
- 7. How energy moves using rays or waves
- 8. This describes energy that's used to complete a task
- 12. Warm air is less _________ than cold air
- 13. These are made from ancient plants and animals
- 15. This uses the energy of falling water
- 17. This energy source is found is food and batteries
- 18. When the amount of energy coming in equals the amount of energy going out, this is balanced
- 22. This energy source creates heat